19988111

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 24086832

約数和(自身を除く): 4098721

約数列:

[1, 11, 13, 97, 121, 131, 143, 1067, 1261, 1441, 1573, 1703, 11737, 12707, 13871, 15851, 18733, 139777, 152581, 165191, 206063, 1537547, 1817101, 19988111]

約数ペア:

[(1, 19988111), (11, 1817101), (13, 1537547), (97, 206063), (121, 165191), (131, 152581), (143, 139777), (1067, 18733), (1261, 15851), (1441, 13871), (1573, 12707), (1703, 11737)]